I kind of doubt that. physX isn't as great as its marketing says and NVIDIA's future is uncertain because of various issues like its lack of a x86 license.

At the moment I still like Newton best but with the recent moves by big companies like Sony and AMD to support Bullet, I think it's more likely that the future of physics engines lies in open source.

http://www.geek.com/articles/games/amd-t...system-2009102/